Base for a portable computer



FIG. 1 is a front, top, and left side perspective view of a base for a portable computer;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a left side elevational view thereof, the right side elevational view being a mirror image of the left side elevational view shown. 

CLAIM The ornamental design for a base for a portable computer, as shown and described. 